Switch SoftwareRenderer to use tryAllocPixels()

SkBitmap allocations were using allocPixels() which will crash on OOM.
In order to indicate the crash is due to OOM use tryAllocPixels() and
then call base::TerminateBecauseOutOfMemory() on failure. This will
improve crash reports.

If SkBitmap allocation fails for a CopyOutputRequest we can handle the
OOM gracefully, since the caller has to be able to handle failed
requests regardless.

Bug: 995411
Change-Id: Ifad190badca49c948e5ae612dd33df39ef5923f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1993667Reviewed-by: weiliangc <weiliangc@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#730243}

components/viz/service/display/software_renderer.cc

@@ -4,6 +4,7 @@
 
 #include "components/viz/service/display/software_renderer.h"
 
+#include "base/process/memory.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/paint/image_provider.h"
@@ -617,9 +618,12 @@ void SoftwareRenderer::CopyDrawnRenderPass(
                 geometry.result_selection.right(),
                 geometry.result_selection.bottom()});
   } else /* if (!request->is_scaled()) */ {
-    bitmap.allocPixels(SkImageInfo::MakeN32Premul(
+    SkImageInfo info = SkImageInfo::MakeN32Premul(
         geometry.result_selection.width(), geometry.result_selection.height(),
-        std::move(color_space)));
+        std::move(color_space));
+    if (!bitmap.tryAllocPixels(info))
+      return;
+
     if (!current_canvas_->readPixels(bitmap, geometry.readback_offset.x(),
                                      geometry.readback_offset.y()))
       return;
@@ -715,9 +719,12 @@ sk_sp<SkImage> SoftwareRenderer::ApplyImageFilter(
 
 SkBitmap SoftwareRenderer::GetBackdropBitmap(
     const gfx::Rect& bounding_rect) const {
+  SkImageInfo info =
+      SkImageInfo::MakeN32Premul(bounding_rect.width(), bounding_rect.height());
   SkBitmap bitmap;
-  bitmap.allocPixels(SkImageInfo::MakeN32Premul(bounding_rect.width(),
-                                                bounding_rect.height()));
+  if (!bitmap.tryAllocPixels(info))
+    base::TerminateBecauseOutOfMemory(info.computeMinByteSize());
+
   if (!current_canvas_->readPixels(bitmap, bounding_rect.x(),
                                    bounding_rect.y()))
     bitmap.reset();
@@ -846,7 +853,9 @@ sk_sp<SkShader> SoftwareRenderer::GetBackdropFilterShader(
   SkImageInfo info =
       SkImageInfo::MakeN32Premul(backdrop_rect.width(), backdrop_rect.height());
   SkBitmap bitmap;
-  bitmap.allocPixels(info, info.minRowBytes());
+  if (!bitmap.tryAllocPixels(info))
+    base::TerminateBecauseOutOfMemory(info.computeMinByteSize());
+
   SkCanvas canvas(bitmap);
 
   // Clip the filtered image to the (rounded) bounding box of the element.
@@ -922,7 +931,9 @@ void SoftwareRenderer::AllocateRenderPassResourceIfNeeded(
       SkImageInfo::MakeN32(requirements.size.width(),
                            requirements.size.height(), kPremul_SkAlphaType);
   SkBitmap bitmap;
-  bitmap.allocPixels(info);
+  if (!bitmap.tryAllocPixels(info))
+    base::TerminateBecauseOutOfMemory(info.computeMinByteSize());
+
   render_pass_bitmaps_.emplace(render_pass_id, std::move(bitmap));
 }